Public bug reported:
Binary package hint: plymouth
With Plymouth 0.8.0~-17 and and ATI onboard graphics (AMD 785 chipset),
kernels 2.6.32-16-generic and 2.6.32-17-generic cause Plymouth to render
slightly off-center and flicker to black, coming back up to the
desktop, as X starts. On this machine, setting the monitor so X renders
on-center causes the framebuffer and POST screens to do that, indicating
that the framebuffer driver is being used. The ubuntu-logo theme still
renders, but with the flicker to black as X starts that did NOT occur
with earlier kernels.
Remaking the initramfs with only the drm renderer(by editing the hook
script), causes Plymouth to revert to the text theme-and again flicker
to black and then to the desktop as X starts. Making an initramfs with
only the framebuffer renderer lets the ubuntu-logo theme work but the
flicker as X starts is still present. This indicates that the
framebuffer driver is being used by default and something is going wrong
with the DRM renderer with the 2.6.32-16-generic and 2.6.32-17-generic
kernels on at least some ATI graphics cards/embedded graphics.
I am using the open-source radeon driver, whose full 3d acceleration
with Lucid(and NO closed-source, proprietary drivers needed!) is the
reason I have been using the onboard graphics and have switched my
preference in desktop graphics from Nvidia to ATI. For now I am simply
using kernel 2.6.32-15-generic on that machine(the new ones are fine on
the MSI Wind with Intel graphics). Plymouth needs to work without the
flicker on whatever kernel becomes the final Lucid release kernel,
however. I do not want to have to archive and use a pre-release kernel
for the life of Lucid, as the usual kernel bugs or security holes are
found and patched.
** Affects: plymouth (Ubuntu)
Importance: Undecided
Status: New
--
Rendering reverts to framebuffer with kernel 2.6.32-16 or later
https://bugs.launchpad.net/bugs/546893
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